Answer
7420.4 radian (approximately)
Mud tires have less angular displacement
Step-by-step explanation
Given that,
The total distance covered = 2600 m 
 circumference of the wheel 
 2 π r 
 2 * 3.14 * 0.35m 
= 2.20m
 number of rotations of the wheel 
 2600 / 2.20 
= 1181.81
≈ 1181
 
 1 rotation the angular displacement ---> 2π (radian) 
1181 rotation the angular displacement ---> 2π * 1181 
 = 7420.4 radian(approximately)
Angular displacement is directly proportional to number of rotation.
So,
angular displacement = 2600 / 2 π r 
so it can be seen that angular displacement is indirectly proportional to radius, means more the radius less will be angular displacement.